/Engine/Source/Runtime/Engine/Public/ImageUtils.h
Exports aUTextureCubeas an HDR image on the disk. this does GenerateLongLatUnwrap
Export operation success or failure.
static bool ExportTextureCubeAsHDR ( [UTextureCube](API\Runtime\Engine\Engine\UTextureCube) * TexRT, [FArchive](API\Runtime\Core\Serialization\FArchive) & Ar )